Clawed driving wheel for motor plows, tractors, and the like



R. SOHNER 01mm!) DRIVING WHEEL FOR MOTOR FLOWS, TRACTORS, AND THE LIKE Filed March :5. 1925 Z: Roberl' Sahnr) lNv: NTOR,

Patented 8, 1925.

UNITED TATEt-i CLAWED DRIVING TUEEEL FOR. M02 0? PLGHS, TFAGTQRS, AND THE LIKE.

Application filed March To aZZ whom it may concern:

Be it known that T, Ronni-Yr Sorrnnn, a citizen of the tcpublicof Austria, and r siding at Vienna, Austria, linollgasse have invented certain new and useful improvements in Clawed Driving Wheels for Motor Plows, Tractors, and the like, of which the following is a specification.

Clawed driving wheels for motor plows, motor tractors and the like, having claws arranged dctachably upon the wheel felloe, are already known. The existing clawed driving wheels or" this type surfer from the particular disadvantage that the arrangements for bolting the claws to the wheel telloc are situated in the immediate neighbour hood of the periphery of the driving wheel, so that if the driving wheel sinks, even slightly, into the ground, contact takes place between the bolting means and the earth and the locking means become completely soiled with the earth and are frequently also damaged. The attaching and detaching oi the claws in known clawed driving wheels is troublesome and takes a considerable time.

The object of the present invention is to avoid the above-mentioned disadvantages of known forms of clawed driving wheels. This is achieved, according to the present invention, by arranging the parts of the coupling members which serve to attach the claws, and the corresponding locking devices, at a distance from the periphery of the driving wheel in order to prevent contact of the securing or locking parts with the ground.

One constructional example of the invention is illustrated in the accompanying drawings. in whicl Fig. 1 shows a part of a clawed driving wheel in front elevation.

Fig. 2 section on the hue 11-11 of Fig. 1.

Fig. 3 a plan view of the development of a portion of the wheel felloe.

Figs. l, 5 and 6 show a claw in side elevation, front elevation and plan respectively.

a are the claws, Z) the wheel felloe, 0 the spokes and d the hub of the driving wheel. The felloe and the spokes of the driving wheel are made, in the present example, of U-shape cross-section. Each of the claws a; is connected to the driving wheel by means of a coupling device 02. A releasable locking device 3 co-operates with each coupling device and secures it and the claw firmly in position upon the body of tee wheel. The.

coupling device and the locking device 1 may be constructed and arranged in different ways. In the example illustinted,v the coupling device consists of an angle piece, one arm 1 of which is formed as a securing bolt and is of circular cross-section. The second arm 2 is also of circular crosssection, and may be locked to parts of the driving wheel by means of the locking device 1 The locking device y consists of a springloaded pin 5 which engages in a hole 6 (Fig. 1) in the end of the second arm 2. The pin 5 is at the end or a leaf spring 8, the other end of which is secured to the spokes 0 of the driving wheel by means of rivets 9. Between the leaf spring 8 and the spokes 0 is a distance piece 10. A swinging space 12 for the arm 2 of the bolting device is formed between the leaf spring 8 and the spokes c.

The claws consist, according to the example illustrated, of a single casting. Each claw has base plate 15 0t rectan 'ular shape which rests upon the periphery of the wheel. Securing lugs 16 are provided upon the smaller sides of the base plate and projecting downwards from it. On one of the longer sides of the base plate are two spaced claw prongs 19, 20 extending upwards. These prongs consist of plates of the shape shown in Figs. 5 and 6. The cross-section of the base plate is made greater in the middle than at the edges for the purpose of preventing breakage of the base plate if incomplete contact takes place between it and the periphery of the wheel. Holes 22 and 23 are formed in the securing lugs 16, 1?.

through which holes the arm 1 of the angle member passes when the claws are attached to the wheel felloc. The claws 19, 20 are arranged somewhat inclined relative to the base plate 15 in known manner, and by this means a satisfactory grip with the ground is ensured "When the claws are placed and bolted upon the wheel felloe the various com ponents of the clawed driving wheel assume the positions shown in Figs. 1 to 3. The arms 1 of the angle pieces pass through the holes 22, 23 in the securing lugs and through the holes 28 in the spokes, so that the bolting arms 2 are upon one side of the spokes and lie along a line running through the wheel axis. The bolting arms 2 are bolted to the spokes by means of the locking device 2 lVhen it is required to remove the 

